Identity operator
单位算子
🧩 词语组成解析
identity
[ai'dentiti]
n. 身份;[逻]同一性;个性;[数]恒等（式）;
🗣️ 情景例句
Anything else, sir?
先生，还要别的东西吗？
He took a strong attitude towards her.
他对她采取强硬态度。
Here is my card.
这是我的名片。